Improved apparatus for tightening belts



JAMES M. KING, or QUINCY., MINNESOTA.

Letters Patent No. 85.012, dated December 15, 1868.

IMP-RQ'VED APIEARA'JUS FOR TIGHTENING BELTS.

Tlle Schedule referred to in these Letters Patent and making part o fthe same.

To all 'whom it 'ma/y concern:

Be .it known that I, JAMES M. Kme, of Quincy, in the county of Olmsted,and State of Minnesota, have invented certain new and usefulImprovements in Apparatus for Tightening Belts of Machinery; .and I dohereby declare that the following is a full, clear, and exactdescription thereof', reference being had to the accompanying drawings,making part of this specifica tion,'and to the letters of referencemarked thereon, like letters indicating like parts wherever they occur.

To enable others skilled in the art to construct and use my invention, Iwill proceed to describe it.

Mynvention consists in a novel arrangement of devices for tightening oradjusting the driving-belts of machinery, by means of which the beltsmay be quickly `brought to any required tension, and which permits ofthis being done when the belt isrin motion as readily as when at rest,all as hereinafter explained.

In the accompanying drawings- Figure l is a front view'of my tightenerin position, being applied to a belt running over two wheels or pulleys.

Figure 2 is a ont-,end view of the device shown by itself. My tightenerconsists of a small wheel or pulley, which bears against the face oftheY belt at any point between the pulleys connected by the said belt,and which is forced against it by means of a thumb-screw, thus bringingthe belt to any required tension.

A A represent two wheels or pulleys, driven, one from the other, bymeans of a belt, B, passing around them.

(l is a roller or pulley lying across the face ofthe belt, and beingmounted upon the stud D, which stud is rigid on and projects om the faceof the flat-iron plate E, as clearly shown in iig. 2.

The plate E is mounted within an iron frame, F, which frame isU-sliaped, and secured in position with its open end towards the belt C,as shown in fig. l. The inner parallel faces of this frame are groovedlongitudinally,

land into these grooves is slid the blockA or plate E,

bearing its roller, as before described.

` Through the back end of the metal frame E is tapped the thumb-screw G,lwhich bears against the plate F, and which screw, as it `is set up,carries the plate E towards the belt, and forces the roller C againstit, thus tightening it to any required degree, according as the screw isturned forward.

This tightener may be applied to belts running in any direction, eitherhorizontally, vertically, or in any intermediate direction.

This device will also be found to be very useful in places where it isnecessary to vary the distance between the pulleys over which the beltpasses, as often happens, as, by its use, the necessity is avoided ofhaving to take up or change'the belt each time that the pulleys areadjusted.A

The belt may be run 'in either direction without changing or setting'thetightener, asis necessary with those made by pivoting an arm at somedistance from the belt, providing its inner end with a roller, andallowing it to lie against the belt.r

Having thus described my invention,

What I claim, is-

The belt-tightening device, consisting of the loose pulley C, mounted ona stud, D, attached to the plate E, arranged to slide in the frameF,.and adj usted by the set-Screw G or its equivalent, al1 substantiallyas herein described.

JAMES M. KING.

Witnesses:

JOHN M. Coon, S. H. BROWN,

